Toss bread, gingersnaps, strawberries, rhubarb and 1/4 cup walnuts in a large bowl. Add the custard and toss well to coat. Transfer to the prepared baking dish and push down to compact. Cover with foil.

Step 4

Bake until the custard has set, 40 to 45 minutes. Uncover, sprinkle with 1/4 cup walnuts (or Streusel Topping) and continue baking until the pudding is puffed and golden on top, 15 to 20 minutes more. Transfer to a wire rack and cool for 15 to 20 minutes before serving.